Barton 45mm Size 3 Lead Block

The Barton Size 3 45mm Plain Bearing Pulley Block Stanchion Lead Block (Manufacturer Part N03190) is a compact sailing block with a 45mm Acetal sheave and stainless steel frame. It provides a high strength to weight purchase for mainsheets vangs and lead lines on dinghies dayboats and lightweight cruisers and accepts rope up to 10mm (3/8").

Problem: small boats and light rigs need blocks that resist corrosion reduce weight and keep lines running smoothly. Solution: this block uses a 30% fiberglass filled nylon body and an Acetal sheave to combine stiffness and low friction while the stainless frame adds corrosion resistance and durability.

• 45mm (1 3/4") Acetal sheave for low friction and reduced line wear
• Accepts up to 10mm (3/8") rope suitable for mainsheet and control lines
• 30% fiberglass filled nylon body for strength with minimal weight
• Stainless steel frame for corrosion resistance in marine conditions
• Plain bearing design for reliable low maintenance operation
• Compact Size 3 profile fits tight purchase systems and stanchion leads

Use case: install this block as a stanchion lead or low angle lead block where a compact durable purchase is required. Compared to metal sheave blocks the Acetal sheave reduces line wear and overall weight while maintaining load capacity. Unlike sealed ball bearing blocks this plain bearing unit is simpler to service and better suited to exposure to grit and spray.

Materials and authority signals: manufactured by Barton Marine part number N03190 using Acetal sheaves 30% glass filled nylon body and stainless steel frames. If your rig requires a compact serviceable lead block that fits 10mm rope this block gives clear material specifications and a known mounting form. Order now to confirm fit for your boat or learn more.